micropython/extmod/machine_pwm.c

Ignoring revisions in .git-blame-ignore-revs. Click here to bypass and see the normal blame view.

150 lines
5.9 KiB
C
Raw Normal View History

/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2020-2021 Damien P. George
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "py/runtime.h"
#if MICROPY_PY_MACHINE_PWM
#include "extmod/modmachine.h"
// The port must provide implementations of these low-level PWM functions.
STATIC void mp_machine_pwm_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind);
STATIC mp_obj_t mp_machine_pwm_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *args);
STATIC void mp_machine_pwm_init_helper(machine_pwm_obj_t *self, size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args);
STATIC void mp_machine_pwm_deinit(machine_pwm_obj_t *self);
STATIC mp_obj_t mp_machine_pwm_freq_get(machine_pwm_obj_t *self);
STATIC void mp_machine_pwm_freq_set(machine_pwm_obj_t *self, mp_int_t freq);
#if MICROPY_PY_MACHINE_PWM_DUTY
STATIC mp_obj_t mp_machine_pwm_duty_get(machine_pwm_obj_t *self);
STATIC void mp_machine_pwm_duty_set(machine_pwm_obj_t *self, mp_int_t duty);
#endif
STATIC mp_obj_t mp_machine_pwm_duty_get_u16(machine_pwm_obj_t *self);
STATIC void mp_machine_pwm_duty_set_u16(machine_pwm_obj_t *self, mp_int_t duty_u16);
STATIC mp_obj_t mp_machine_pwm_duty_get_ns(machine_pwm_obj_t *self);
STATIC void mp_machine_pwm_duty_set_ns(machine_pwm_obj_t *self, mp_int_t duty_ns);
// The port provides implementations of the above in this file.
#include MICROPY_PY_MACHINE_PWM_INCLUDEFILE
STATIC mp_obj_t machine_pwm_init(size_t n_args, const mp_obj_t *args, mp_map_t *kw_args) {
mp_machine_pwm_init_helper(args[0], n_args - 1, args + 1, kw_args);
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_KW(machine_pwm_init_obj, 1, machine_pwm_init);
// PWM.deinit()
STATIC mp_obj_t machine_pwm_deinit(mp_obj_t self_in) {
machine_pwm_obj_t *self = MP_OBJ_TO_PTR(self_in);
mp_machine_pwm_deinit(self);
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(machine_pwm_deinit_obj, machine_pwm_deinit);
// PWM.freq([value])
STATIC mp_obj_t machine_pwm_freq(size_t n_args, const mp_obj_t *args) {
machine_pwm_obj_t *self = MP_OBJ_TO_PTR(args[0]);
if (n_args == 1) {
// Get frequency.
return mp_machine_pwm_freq_get(self);
} else {
// Set the frequency.
mp_int_t freq = mp_obj_get_int(args[1]);
mp_machine_pwm_freq_set(self, freq);
return mp_const_none;
}
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(machine_pwm_freq_obj, 1, 2, machine_pwm_freq);
#if MICROPY_PY_MACHINE_PWM_DUTY
// PWM.duty([duty])
STATIC mp_obj_t machine_pwm_duty(size_t n_args, const mp_obj_t *args) {
machine_pwm_obj_t *self = MP_OBJ_TO_PTR(args[0]);
if (n_args == 1) {
// Get duty cycle.
return mp_machine_pwm_duty_get(self);
} else {
// Set duty cycle.
mp_int_t duty = mp_obj_get_int(args[1]);
mp_machine_pwm_duty_set(self, duty);
return mp_const_none;
}
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(machine_pwm_duty_obj, 1, 2, machine_pwm_duty);
#endif
// PWM.duty_u16([value])
STATIC mp_obj_t machine_pwm_duty_u16(size_t n_args, const mp_obj_t *args) {
machine_pwm_obj_t *self = MP_OBJ_TO_PTR(args[0]);
if (n_args == 1) {
// Get duty cycle.
return mp_machine_pwm_duty_get_u16(self);
} else {
// Set duty cycle.
mp_int_t duty_u16 = mp_obj_get_int(args[1]);
mp_machine_pwm_duty_set_u16(self, duty_u16);
return mp_const_none;
}
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(machine_pwm_duty_u16_obj, 1, 2, machine_pwm_duty_u16);
// PWM.duty_ns([value])
STATIC mp_obj_t machine_pwm_duty_ns(size_t n_args, const mp_obj_t *args) {
machine_pwm_obj_t *self = MP_OBJ_TO_PTR(args[0]);
if (n_args == 1) {
// Get duty cycle.
return mp_machine_pwm_duty_get_ns(self);
} else {
// Set duty cycle.
mp_int_t duty_ns = mp_obj_get_int(args[1]);
mp_machine_pwm_duty_set_ns(self, duty_ns);
return mp_const_none;
}
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(machine_pwm_duty_ns_obj, 1, 2, machine_pwm_duty_ns);
STATIC const mp_rom_map_elem_t machine_pwm_locals_dict_table[] = {
{ MP_ROM_QSTR(MP_QSTR_init), MP_ROM_PTR(&machine_pwm_init_obj) },
{ MP_ROM_QSTR(MP_QSTR_deinit), MP_ROM_PTR(&machine_pwm_deinit_obj) },
{ MP_ROM_QSTR(MP_QSTR_freq), MP_ROM_PTR(&machine_pwm_freq_obj) },
#if MICROPY_PY_MACHINE_PWM_DUTY
{ MP_ROM_QSTR(MP_QSTR_duty), MP_ROM_PTR(&machine_pwm_duty_obj) },
#endif
{ MP_ROM_QSTR(MP_QSTR_duty_u16), MP_ROM_PTR(&machine_pwm_duty_u16_obj) },
{ MP_ROM_QSTR(MP_QSTR_duty_ns), MP_ROM_PTR(&machine_pwm_duty_ns_obj) },
};
STATIC MP_DEFINE_CONST_DICT(machine_pwm_locals_dict, machine_pwm_locals_dict_table);
MP_DEFINE_CONST_OBJ_TYPE(
machine_pwm_type,
MP_QSTR_PWM,
MP_TYPE_FLAG_NONE,
make_new, mp_machine_pwm_make_new,
print, mp_machine_pwm_print,
locals_dict, &machine_pwm_locals_dict
);
#endif // MICROPY_PY_MACHINE_PWM